One Hook
One Line
One fish at a time

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What is one-by-one?

One-by-one caught tuna (pole-and-line, handline, or troll) from coastal small-scale fisheries is the only tuna fishing method, which is considered to be environmentally safe, socially responsible, and based on generations of tradition.

Fishing one-by-one not only allows tuna species to flourish, but it also reduces by-catch of marine life, helps to protect and restore biodiversity, and minimises plastic pollution.

Sustainable one-by-one fisheries bring income and recirculate wealth among coastal communities whose local economies depend on the fishing industry. This contributes to local food security, poverty alleviation, and secures livelihoods.

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A world with thriving fisheries that work in balance with nature by catching one fish at a time.


We represent small-scale tuna fisheries and are pushing the industry to focus more on sustainability. We work together with our one-by-one fisheries and IPNLF members – a network of industry leaders (commercial companies, large retail companies, seafood brands, food services, civil society organisations and associations) to drive change and improvements at sea to bring the most sustainable tuna to you. Find out where to get your one-by-one caught tuna.


We work with our IPNLF members all over the world to deliver ethical tuna from catch to kitchen.

Our Members

Health Benefits

How one-by-one caught tuna contributes to ocean health and your personal health.

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Our Board of Trustees guide IPNLF forward and oversee the governance of our organisation.

Our Trustees


We represent responsible small-scale fisheries and we want to ensure they receive the equal opportunities they rightly deserve. Our activities vary from practical projects that enable small-scale fishers to ensure best practices on the water, to working with businesses to implement improvements throughout the supply chain as well as ensuring that the rights and needs of one-by-one fishers are considered in regional, national and international policy.